0LOG(I/Io) NORMALIZED TRANSMITTER CURRENT
(dB)
0LOG(I/Io) NORMALIZED TRANSMITTER CURRENT
(dB)
I
F
TRANSMITTER FORWARD CURRENT (mA)
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
CABLE ATTENUATION
MAX (-40 °C, +85 °C)
MIN (-40 °C, +85 °C)
TYP (+25 °C)
0
2
dB/km
4
1.5
2.8
4
TYPICAL +25 °C
UNDERDRIVE
OVERDRIVE
WORST CASE
-40 °C, +85 °C
UNDERDRIVE
60
50
40
30
20
0
-1
-2
-3
-4
-5
-6
-7
-8
-9
CABLE ATTENUATION
MAX (-40 °C, +85 °C)
MIN (-40 °C, +85 °C)
TYP (+25 °C)
0
1
2
3
dB/km
5.5
1.0
3.3
4
TYPICAL +25 °C
UNDERDRIVE
OVERDRIVE
WORST CASE
-40 °C, +85 °C
UNDERDRIVE
60
50
40
30
20
10
10
-10
-11
6
-10
-11
6
LINK LENGTH (km)
LINK LENGTH (km)
Figure 3. HFBR-1414Z/HFBR-2412Z Link Design Limits with 62.5/125 μm
Cable.
Figure 4. HFBR-14x2Z/HFBR-24x2Z Link Design Limits with 100/140 μm
Cable.
75
10 LOG (t/to) NORMALIZED TRANSMITTER CURRENT (dB)
0
60
70
t PLH OR t PHL PROPOGATION DELAY –ns
-1
-2
WORST CASE
-40°C, +85°C
UNDERDRIVE
50
I
F
– TRANSMITTER FORWARD CURRENT – (mA)
65
60
55
50
45
40
35
30
25
t
PLH
(TYP) @ 25°C
TYPICAL 26°C
UNDERDRIVE
40
-3
30
t
PHL
(TYP) @ 25°C
-4
CABLE ATTENUATION
α
MAX (-40°C, +85°C)
α
MIN (-40°C, +85°C)
α
TYP (-40°C, +85°C)
0
0.4
0.8
1.2
1.6
dB/km
4
1
2.8
2
-5
-6
20
20
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
P
R
– RECEIVER POWER – dBm
LINK LENGTH (km)
Figure 5. HFBR-14x4Z/HFBR-24x2Z Link Design Limits with 50/125 μm
Cable.
55
50
tD – NRZ DISTORTION – ns
Figure 6. Propagation Delay through System with One Meter of Cable.
45
40
35
30
25
20
-22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12
P
R
– RECEIVER POWER – dBm
Figure 7. Typical Distortion of Pseudo Random Data at 5 Mb/s.
12
I
F
TRANSMITTER FORWARD CURRENT (mA)
AVAGO [ AVAGO TECHNOLOGIES LIMITED ]
